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T � / period of time the tanks were in service. The site had been a welding supply warehouse for many years; a small portion of the building is still used for that purpose. The rest is leased for use as an automotive body repair shop. BRIEF REVIEW OF PRIOR WORK: June 12, 1986 - Two 550 gallon UST's were removed from the property by Seibold, Inc. The owners have no information concerning the disposition of the tanks by the contractor, or what was done with the removed spoil. August 28, 1986 - Two (2) soil samples were taken from the site of the removed UST's by an employee of Canonie Environmental. It is assumed that the excavation was filled after this work was performed. September 19, 1995 - The site of the removed UST's was reentered using Jim Thorpe Oil, Inc. equipment and personel under the direction of Wm. Hunter, RG from Wm. J. Hunter & Associates. Approximately 130 cubic yards of contaminated soil was excavated; it was disposed of at a licensed land fill. The REHS representative from the San Joaquin Co. EHD directed that soil & water samples were not needed at that time, since additional work would be required. The excavation was filled with pea gravel and covered with asphalt. For more details of that work, refer to Wm. J. Hunter & Associates (WJH) report titled "Interim Assessment Report Covering Results of Soil Excavation Work & Work plan for Soil & Groundwater Investigation'; dated February 8, 1996. TABLE I summarizes the results of the lab analyses from the spoil pile samples. July 25, 1996 - Eight (8) shallow geoprobe holes were placed on the property in an attempt to define the lateral limits of soil and groundwater contamination. The details of that work is covered in the Wm. J. Hunter & Associates report titled "Interim Assessment Report Covering Results of Soil & Groundwater Investigation..." dated August 26, 1996. The locations of those probe holes are shown on PLATE III. The lithologic plots are included as PLATES VIIIA - VIIIH. The laboratory results of soil and water samples taken during that work are summarized on TABLES 11 & III. October 4 1996 - Three (3) 2" monitoring wells were placed on the property under the direction of Wm. J. Hunter & Associates. They were drilled to 20' bgl, and screened from bottom to 5' below grade. The details of that work is covered in the Wm. J. Hunter & Associates report titled `Interim Assessment Report Covering Results of Soil & Groundwater Investigation" dated November 12, 1996. The locations of the three wells is shown on PLATES III & IV. Copies of the lithologic plots and completion diagrams are shown on PLATES IXA - IXF. The results of the laboratory analyses of soil samples from that work are summarized on TABLE IV. 3